Whether you’re installing a new fence or replacing an existing one, you’ll need to set fence posts into concrete so that your panels can slide into them. As the backbone of strength for your garden fencing, it’s essential that you install the fence post correctly.

You may think it’s as simple as digging a hole for the post and filling it with concrete, but there’s much more to it. In this article, we share a step-by-step guide on installing a fence post into concrete.  

Step 1: Make sure you have the right tools 

Before you get started, make sure you have everything you need:

Step 2: Mark out where your posts are going

Use your tape measure, string and stakes to mark out the positions of your fence posts. The space between your posts will vary depending on the size of the fence panels you’re using, which are usually 1.8 to 2.4 meters. 

Step 3: Dig the hole for the post

Begin digging a hole. It should be three times the width of your fence post and a third of the post’s height in depth. For example, if your fence post is 1.8m high, it should be 600mm deep. The trick here is to make the hole as neat as possible for a nice, clean finish. 

Step 4: Add some pea gravel for drainage

Once your hole is dug, pour around 100mm of gravel at the bottom to help with drainage and prevent the post from rotting if you are using a wooden post. The smaller the gravel the better, look for pea gravel. If your soil is very wet or the ground is clay-heavy, add another 50mm of gravel. 

Step 5: Place your post in the hole

Lower the post into the centre of the hole and use a spirit level to make sure it’s upright and straight. Ask someone to help you so they can hold it while you brace it with stakes to keep it in position before you add the concrete. 

Step 6: Pour the concrete

If you are using quick-set concrete, you can pour the dry mix straight into the hole around the post and then add water as directed on the bag. Typically, this is approximately 1-2 litres per 20kg bag. Once mixed, use a wooden stick to remove any air pockets from the mix.

The method is slightly different if you’re using a traditional concrete mix. Empty the concrete into a wheelbarrow and mix according to the instructions on the bag. Once mixed, pour the mixture into the hole and tamp it down around the post to remove any air bubbles. 

Step 7: Leave it to set

Check the bag for instructions on how long the concrete will take to dry, and be sure to leave it for the appropriate amount of time before inserting fence panels. 

Looking for ready-mixed concrete for your home project?

At Erris Concrete, we specialise in supplying ready-mixed concrete to both domestic and commercial customers. 
If you are taking on a home DIY project and need ready-mixed concrete, please get in touch to see how we can help.